The Ultimate Guide to HTTP Status Codes (100–599)
A complete reference guide to all HTTP status codes from 100 to 599, with explanations and common use cases.
Feb 28, 2026
305
HTTP 305 Use Proxy
3xx Redirection
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3xx Redirection
RFC 7231, Section 6.4.5
What is HTTP 305 Use Proxy?
The 305 (Use Proxy) status code indicates that the requested resource must be accessed through the proxy given by the Location field. This status code is deprecated due to security concerns and is no longer used by modern servers.
Common Use Cases
- Legacy proxy configuration (deprecated)
Usage Example
Do not use 305 in modern applications. It is deprecated and ignored by all major browsers. If you need to configure proxy settings, use PAC files, DHCP, or browser configuration instead.
// NOT RECOMMENDED - 305 is deprecated and ignored by browsersRelated Status Codes
Last updated: 17 Aug 2026